Comment by satvikpendem

I do this already, but with Flutter and Rust, via the FFI package flutter_rust_bridge. You can write your logic in Rust and transparently call the functions from the Dart side. The benefit is that you get rock solid business logic that can be compiled everywhere as well as a "write once, run everywhere" solution in Flutter. I don't see why you'd need or want to write even the UI layer from scratch every time.